9 daughter colonies of the 4a were tested:
CH-51-10-3595-1991 CH-51-10-3596-1991 CH-51-15-3614-1991 CH-51-15-3615-1991 CH-51-15-3616-1991 CH-51-15-3617-1991 CH-51-15-3618-1991 CH-51-15-3619-1991 CH-51-15-3620-1991
9 tested queens were mated at the mating station:
CH-51-108-4750-1992 CH-51-108-4896-1992 CH-51-181-5026-1992 CH-51-203-4450-1992 CH-51-203-4694-1992 CH-51-204-4460-1992 CH-51-204-4461-1992 CH-51-204-4711-1992 CH-51-204-4713-1992
7 daughter colonies of queens mated at the mating station were tested:
CH-51-181-5397-1995 CH-51-181-5399-1995 CH-51-204-4709-1993 CH-51-204-5089-1994 CH-51-204-5090-1994 CH-51-204-5092-1994 CH-51-204-5093-1994